Excavating bucket



March 8, 1932.l J. 1. GALSLT EXCAVATING BUCKET Filed July 8, 1929 2 Shee'hswSheg l March 8, 1932. J. J. GAULT 1,848,166

EXCAVATING BUCKET Patented iMar.' 8, 1932v UNITED JOHN J. GAULT, or c HIcGo; Inrirnors, AssrenonV 'ro w.

., V; cnrcnqo, 'in ninors `nxcnvA'JInel BUCKET j L r Application. feed EJury s, 1929. serial -Naievaeor This invention vrelates to excavating buckets of the type having* more than two jaws orVV sections, some of the buckets of this chari acter being commonly known as orangerpeel i Abuckets or four arm buckets. `When such ordinary four arm buckets are opened, the e points of the blades are spreadto such-an .extent that if the bucket is dropped there-is more or less of'aspring or resilient action i inthe blades due to the force of they weight at'the center, which prevents the blades` from being driven into. the ground or vmaterial to be excavated.V "Furthermore, the arrangement of these blades as ordinarily made is lsuch that there isatendency for them'to bend at a short distance from theends Vwhich is due to the low'or flat'arches incident to the spread or open position of theblades.

The present invention isintendedto` provide a' bucket or excavating device whichwill avoid such objectionable features of the' ones heretofore in use and which will be morefeffcientinuse.. VThe objects of this invention are toprov videV an improved excavating or digging bucket which is particularly adapted forl use. in connection with Y hard material, 4such as gravel or4 the like, or for lift-ingout boulders;

to provide an excavating bucket Vhaving a -relatively large number of'blades whereby each of the blades may be comparatively nar row ;to provide an excavating bucket having a plurality of blades which are 'pivoted so that the pivotal points come approximately over, or preferably within, the points, whereby the engagement of the points with the mav terial to be excavatedtends to'open the blades or hold'them inopen position;l tov providea multiple bladed excavating device;having'!a 0 supporting frame'which encirclestheblades f or arms; to provide a multiple b ladedexcavating bucket Vhaving 'adjustable weights `which are adapted to 'coact .withf'the `:fweight Y of the bucket to force Vth'efbladesf into the material; to provide' a bucket 4having a plu#` l rality of blades with 'closing means forthe` andato provide lsuch other improvements in 1, construction andadvantages in use as will appear from the following description.

ln the accompanying drawings illustrat'-V ing this invention Figurel-is afdvertical sectional view with parts broken away or shown diagrammatically for convenience in illustration; o 1 -Figure; 2 is a plan view also with parts braken 'awayiw'V i 'v Figure 3 isa' sectional viewof one ofthe ladesand arms Vtaken on the line 3-3 of Figurel'gand Figure 4 is as'ectional view takenfon the line 1 -4E of Figure 2 showing'oneofl theV weights. i Thebucket framel 5 is inthe form of airing and is preferably made' octagonal as shown.

Itis provided a'tthe-corners' or apexes withV pairs of inwardlyprojecting lugs or bearings 6 for supporting the blades 7, These blades which are shown vas being eight in number are Y Y l comparatively long and narrow so ythat they each have relatively sharp digging lpoints 8 which will tend to penetrate the material to ybe excavated. These blades are so"shaped thatthey will close together to forma re ceptacle or bucket such as indicated in dotted lines in Figure 1. i

These blades may be formed integrally with the arms 9 but are preferably secured 'thereto by means of bolts 10. rllhese arms are preferably provided` vwithr Vflanges ll to strengthen the same' and to provide further support for the blades. The arms vpreferably project Youtwardly*at approximately the 'upper ends of the 'blades, as shown at 12,5to provide bearingsA which fit between the lugs J. NEWMAN ooivrrAivY, or

blades which includes toggle mechanism;

6 and which are pivot-ed thereto on pins 13. f

Thefa'rms 9 project `upwardly beyondthe bearings'and are bent or'curvedz-inwardly their* upper ends, as shown' at The upper end of these arnis'are'connected shown in Figure 2, in order to prevent any interference. The headblock 21 is provided with an eye 23 forattachment of the support ing cable (not shown). l

One end of a closing cable 24 is secured to the block 21 as shown at 25. This cable passes down under the pulley 2O and then up through a hole 26 in the block 21. It will be understood that these cables are manipulated in the usual manner for operating the bucket.

It will be seen that when the jaws are open and the bucket is supported on the points thereof, as when being driven into the material to be excavated, all of the weight or power of the frame 5, arms 22 and headblock 21 will be transmitted to the blades through the pivots 13 so that the tendency is to drive the blades straight into the material without bending the same. This weight or force may be augmented by additional removable weights 27 which may be appliedA to the frame and secured thereto by means of screws 28, as shown in Figure 4. It will also be noted that the points of the blades may, if desired, be curved slightly outwardly, as shown in Figure 1, so that the action of the material on the blades tends tohold them open-or force the lower ends slightly outwardly. It will also be noted that inthe arrangement shown the pivot points 13, being below the upper ends of the blades, there will be some overlapping of the upper ends of the blades vwhen in open position.

In operation the bucket may be dropped to cause the blades to be forced into the material to be excavated and practically all of the force due to the weight of the frame and attached parts will be applied directly above the ypoints or in alignment with the blades so that the blades will be forced into the material with but little possibility of their yielding or being` bent. Vhen the closing cable is drawn up it raises the central disk 17 and causes the bucket arms to be forced outwardly at the top, as shown in dotted lines in Figure 1. The final closing action brings into effect the toggle action ot the links 15 so that there will be abundant closing power. The provision of a single pulley on the disk 14 vwill ordinarily be sufficient to give the desired closing action, but it will be observed. that such block and tackle arrangement may be modified by adding additional pulleys in a well known manner if further force is desired. Y

My improved bucket is adapted for various uses such as excavating gravel or the like and is particularly useful in connection with excavating deep wells as for removing boulders or cutting through hard material. While the illustrations disclose a preferred form, it will be apparent that changes may be made in thc construction without departing from the scope of the invention as set forth in the following claims in which I claim:

1. In a bucket of the character set forth, the combination of a substantially octagonal open frame, bucket jaws pivoted in thev angles of the frame, a headblock, connections between the headblock and the frame, a central operating member, means comprising arms secured to the jaws and links from the arms to said operating member for connecting said member with the jaws for opening and closing the same, and a cable coacting. with said central operating member for actuating the same.

2. A bucket of the orange-peel type having ,f

eight relatively long narrow blades, arms secured to said blades and extending upwardly beyond the same, a frame member encircling the arms, pivotal connections betweenV the arms .and the frame member, a headblock, i

arms connecting the headb-lock with the frame member, a center disk, links connecting the disk with the upper ends of the respective-arms, and a closing cable coacting with the headblock and with the center disk for raising said disc to close the jaws.

3. In a bucket, the combination of a ring frame having inwardly projecting bearings, bucket arms pivoted to said bearings, blades secured to saidarms, a central blade closing member, lin-ks connecting said member with .the respective arms and adapted to provide a toggle action in the closing movement, a headblock, arms connecting the headblock with'the frame, a pulley on said closing member, and a closing cable having one end secured to the headblock and passing under said pulley and up through an opening in said headblock.

4. The combination with a bucket of the f characterset forth having jaws with 'a frame member encircling the same to which said jaws are pivoted, of weight-s adapted to be secured to said frame member adjacent to the pivots.

5. In an excavating bucket, the combination of a headblock, means for securing a sup.- porting cable to said headblock, a substantially octagonal frame member, arms connecting the block and frame member, bear,- ings projecting inwardly from said frame member, arms pivoted to said bearings and having their upper ends curved inwardly, blades secured to said arms and adapted to j form a bucket when in closed position, a cenesl tral disk member, links connecting said'menber with the upper ends of the arms, a pulley Y. mounted on said member, and a closing cable passing through an opening in the headblock,

then under said pulley and having ,its end l secured to the headblock, the arrangement being such that when the disk member is in a lowered `position the bucket will be open and when the disk member is in raised position the bucket will `be closed.

JOHN

GAULilf 

